Toxic if swallowed. Contact with acids liberates very toxic gas. Irritating to eyes and skin.

Ingestion: swallowing may result in nausea, vomiting, and abdominal pain. Swallowing large amounts may cause muscle spasms, coma and death from respiratory failure. Irritant to eyes, skin, lungs.

Long Term Effects:
Chronic fluorine poisoning is possible. Intake of more than 1.5 mg/L of fluoride can cause dental fluorosis with amounts of greater than 4 mg/L possibly causing skeletal fluorosis. Symptoms include weight loss, brittle bones, anaemia, weakness, and stiffness of joints.

Do not breathe dust. Avoid contact with skin and eyes. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Wear suitable protective clothing, gloves and eye/face protection. In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible).

The NZ School Dental Statistics are the most robust set of data we have on dental health in New Zealand. The Ministry of Health have now published the 2015 data which show no difference in decay rates between fluoridated and non-fluoridated areas.
See Graphs

“We wondered what the fuss was about (anti-fluoride group) so decided to look into the matter. We got books from the library and looked at information on-line. We very quickly became convinced that fluoride is a neurotoxin and potentially dangerous to health at quite low levels.”